The CAP ALUM POLY 470UF 20 2.5V SMD is a type of capacitor with specific characteristics. It has a capacitance value of 470 microfarads, operates at a voltage rating of 2.5 volts, and features an aluminum-polymer construction. This component is designed for surface mount technology (SMD) applications, with a radial, can configuration. Additionally, it has a relatively low resistance of 20 milliohms and boasts an extended lifespan of up to 2000 hours when subjected to temperatures of 105 degrees Celsius.